check_logfiles

Check_logfiles is a Nagios plugin that is designed to search logfiles for specific patterns. It has the capability to detect logfile rotation, allowing it to examine files that have been rotated if you specify how they look. Unlike traditional logfile plugins, check_logfiles is aware of gaps that can occur and will not ignore them under any circumstance.

This plugin uses a configuration file to specify where to search, what to search for, and what action to take if a matching line is found. Installation of this plugin is relatively simple: begin by entering the directory containing the package's source code and type `./configure' to configure the package for your system.

It's worth noting that if you're using `csh' on an old version of System V, you might need to type `sh ./configure' to prevent `csh' from trying to execute `configure' itself. Once `configure' is running, it will take a few moments to print some messages specifying which features it is checking for.

After that, type `make' to compile the package and optionally run any self-tests that come with the package with `make check'. Then, type `make install' to complete installation of the programs and any required documentation and data files.

If you need to remove program binaries and object files from the source code directory, type `make clean'. If you also want to remove any files that `configure' created - say, if you need to compile the package for a different computer - type `make distclean'. Finally, if you are a developer intending to maintain the package, you can also use the `make maintainer-clean' target.

Overall, check_logfiles is a useful tool for Nagios users seeking a convenient and customizable way to search logfiles for specific patterns, even when those logfiles have been rotated.